Struct CooMatrix 

pub struct CooMatrix<T> {
    pub rows: usize,
    pub cols: usize,
    pub row_indices: Vec<u32>,
    pub col_indices: Vec<u32>,
    pub values: Vec<T>,
}

Coordinate sparse matrix format.

Stores explicit (row, col, value) triplets. Ideal for incremental construction; convert to CsrMatrix for arithmetic.

Invariants (provable contract)

• All arrays have equal length
• row_indices[i] < rows for all i
• col_indices[i] < cols for all i

Fields

rows: usize

Number of rows.

cols: usize

Number of columns.

row_indices: Vec<u32>

Row index for each nonzero.

col_indices: Vec<u32>

Column index for each nonzero.

values: Vec<T>

Value for each nonzero.

Implementations

impl<T: Clone> CooMatrix<T>

pub fn new( rows: usize, cols: usize, row_indices: Vec<u32>, col_indices: Vec<u32>, values: Vec<T>, ) -> Result<Self, SparseError>

Create a new COO matrix with validation.

Errors

Returns error if arrays have mismatched lengths or indices are out of bounds.

pub fn nnz(&self) -> usize

Number of stored nonzero entries.

pub fn empty(rows: usize, cols: usize) -> Self

Create an empty COO matrix.

Trait Implementations

impl<T: Clone> Clone for CooMatrix<T>

fn clone(&self) -> CooMatrix<T>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug> Debug for CooMatrix<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.